{
  "manageEntity": {
    "action": "Update",
    "entityId": "648681585",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb826cdf622d577cafe50ae02a722ad0fd46ecc4b6eaf0efbfd1ae24b46a0a91f",
    "signature": "0x0123d3408013b7cb7235cd9cc95a95aebf243f82d5b1574dd9bbc12539e886db45e5c6b6ee231eb4c02716606009aea8b7c4e99af2686736fc8a9d2293b39a341c",
    "signer": "0x9dE1167A836B21C1599dEB1a1347A5c25CB77Ef8",
    "userId": "648681585"
  }
}